ref: 5388575c149445928b2eb98794998225ecf1ccfa
parent: 90428d0561d8848917c81a4b6ac53067b009eb2f
author: cinap_lenrek <[email protected]>
date: Mon Jun 13 15:18:50 EDT 2022
imx8: better syntax for iomuxpad() options using ~ for negation
--- a/sys/src/9/imx8/iomux.c
+++ b/sys/src/9/imx8/iomux.c
@@ -998,17 +998,13 @@
"VSEL_6", 7<<11, 6<<11,
"VSEL_7", 7<<11, 7<<11,
- "LVTTL_OFF", 1<<8, 0<<8,
"LVTTL", 1<<8, 1<<8,
- "HYS_OFF", 1<<7, 0<<7,
"HYS", 1<<7, 1<<7,
"PUE", 1<<6, 1<<6,
- "PUD", 1<<6, 0<<6,
"ODE", 1<<5, 1<<5,
- "ODD", 1<<5, 0<<5,
"SLOW", 3<<3, 0<<3,
"MEDIUM", 3<<3, 1<<3,
@@ -1015,7 +1011,6 @@
"FAST", 3<<3, 2<<3,
"MAX", 3<<3, 3<<3,
- /* DSE */
"HI-Z", 7, 0,
"255_OHM", 7, 1,
"105_OHM", 7, 2,
@@ -1048,10 +1043,15 @@
if(cfg != nil){struct padopt *o;
+ char *x;
for(o = padopts; o->s != nil; o++) {- if(strstr(cfg, o->s) != nil){- val |= o->v;
+ x = strstr(cfg, o->s);
+ if(x != nil){+ if(x > cfg && x[-1] == '~')
+ val &= ~o->v;
+ else
+ val |= o->v;
mask |= o->m;
}
}
@@ -1063,12 +1063,12 @@
val = 0;
mask = 0;
- if(strstr(cfg, "SION") != nil){- val |= SION;
- mask |= SION;
- }
- if(strstr(cfg, "SIOFF") != nil){- val &= ~SION;
+ x = strstr(cfg, "SION");
+ if(x != nil){+ if(x > cfg && x[-1] == '~')
+ val &= ~SION;
+ else
+ val |= SION;
mask |= SION;
}
}